What powers sumirekan.jp?
Last seen Aug 2026 · 6 technologies across 5 categories
JavaScript libraries
Miscellaneous
Open Graph
since Sep 2022
Operating systems
Debian
since Sep 2020
Security
HSTS
since Sep 2022
Web servers
AI Crawlers
robots.txt could not be read at the last check (Aug 2026), so its policy is unknown.
- robots.txt not checked
- llms.txt not checked
- ai.txt not checked
AI Crawlers
Policy unknown
Audience
- 80% phone
- 20% desktop
Japan
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
1.82 / 10 · ranked #4,264,779 of all domains
7 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.1 s |
| INP | 275 ms |
| CLS | 0.1 |
| TTFB | 200 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: Japanese (Japan)
- Weight: 6.7 MB · 106 requests
- Structured data: OpenGraph
Homepage as crawled by the HTTP Archive, Sep 2026.
Full technology history →
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Recent changes
- dropped Google Analytics Nov 2025